Originally Posted by Wescuddles
Someone said it better and I don't feel like typing an essay. From another forum:
I don't believe you fully understand what you just copied and pasted, and please don't pretend like you could have wrote the same thing.
Sidewall flex is very important as I said before, but this author failed to mention the importance of the inner sidewall flex and while he just implied it. The inner sidewall must flex in the towards the outside of the wheel and a tire stretched heavily doesn't allow for this. When race cars "stretch" their tires, we're talking about a 5mm undersized tire, not a 30 mm undersized one like tuner's define stretched.